Spray unit



FIG. 1 is a top plan view of a spray unit in accordance with my design;

FIG. 2 is a top, front perspective view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a bottom, rear perspective view thereof; and,

FIG. 5 is an elevational view thereof. 

CLAIM The ornamental design for a spray unit, as shown and described. 